Johannes Cortez
/portfolio · 2026·robotics + AI

Johannes Cortez.

Robotics Engineer · solving live system failures.

I diagnose robot failures from log data and live telemetry — and build the internal tools that prevent the next one. Front-line on a global fleet from New Manila. Open to AI / automation roles next.

View workRead aboutresumelive demo
Johannes Christopher O. Cortez — Robotics Engineer
Johannes CortezJC · 2026
live system log·fleet ops · pdx-04
$
currently shippingthe RoboChat customer widgetlast commit · 14m ago
§ 01about

Hi, I'm Johannes.
A short profile.

I'm an L1 RoboCare Specialist at Relay Robotics, currently in the seat where production robot fleets meet the people running them. My day is logs, telemetry, and live incidents — not whiteboards.

I work the diagnostic path most tickets need: reading the rosbag, reproducing the fault, writing the runbook so the next person on shift doesn't start from zero. When a fault actually needs L2, they get a clean trace — not a "have you tried turning it off and on again."

"Most tickets close at L1.
The rest get a clean trace,
not a shrug."

When a runbook isn't enough, I ship the workflow that replaces it. RoboChat is the chat link hospital nurses open to reach me — every customer conversation lands in a Slack channel instead of a missed phone call. The Reimbursement Portal turned a spreadsheet-and-email loop into one-click approvals. I build fast with Claude Code and Cursor, shipping in days, not quarters.

Open to roles in robotics ops, internal tooling, or AI / automation — and to growing into the latter from the operator's seat.

§ 02tools of the trade

What I work with.

Robotics & Diagnostics

Advanced robot diagnostics (Linux · ROS) · rosbag analysis · Nav stack triage · Sensor + elevator interaction triage · Fleet monitoring & telemetry · Embedded systems · IoT

Networking & Linux

Linux logs (journald, syslog) · tcpdump / Wireshark · DHCP / DNS triage · VPN troubleshooting · Wi-Fi roaming RCA · Network security fundamentals

Tools & Platforms

Linux (Ubuntu, Debian) · ServiceNow · Monday.com · Make.com · Salesforce · Slack · Microsoft Teams · Git · GitHub · Microsoft 365 · Google Suite

Automation · Internal Tools

Cursor · Claude Code (vibe-coding) · Make.com · n8n (workflow automation) · Slack Bolt integrations · Email + form automation · Next.js · Supabase shipping stack · Bash · Python tooling

§ 03track record

Where the work happened.

2024 — Present

Relay Robotics

Robo Care Specialist (L1)

Advanced remote troubleshooting on a global fleet of autonomous service robots — using Linux diagnostics, system logs, and fleet monitoring tools to identify and resolve operational issues.

Guide on-site consultants and customer staff through step-by-step troubleshooting during diagnostics and live service incidents.

Investigate connectivity disruptions, navigation issues, sensor alerts, elevator interaction issues, and task cancellations — triaged from log data and live telemetry.

Collaborate closely with L2 engineers and Solutions Architects on complex investigations and escalated cases; learn advanced techniques and share them with the L1 team.

Publish weekly operational updates highlighting new technical findings, recurring issues, and troubleshooting insights for the wider RoboCare team.

Maintain detailed incident documentation and knowledge base articles so solutions get standardized and reused across shifts.

Recognized as a top-performing L1 specialist for fast ticket resolution and detailed case documentation.

2023 — 2024

DXC Technology

Technical Solutions Representative III — Microsoft Global Helpdesk

L1 enterprise technical support for Microsoft 365 services, authentication issues, and endpoint concerns at high case volume.

Logged and tracked cases in ServiceNow with accurate documentation and clean follow-ups.

Identified recurring issues and partnered with senior teams during escalations to improve service reliability.

Received the highest customer commendations on the team across three consecutive quarters; recognized as a top-performing L1 technician.

2021

Ignite Careers PH

Front-End Web Developer Intern

Built responsive web interfaces in HTML, CSS, and vanilla JavaScript.

Collaborated with project stakeholders to deliver front-end solutions aligned with project goals and deadlines.

§ 04selected work

Things I've shipped. Internal tools that closed real operational gaps.

n° 01

RoboChat

Hospital nurses — Relay's customers — needed fast remote help when a robot got stuck or misbehaved. Phones and email were too slow for busy floors. By the time a request was answered, the robot had blocked a corridor for an hour, or the nurse had given up and routed around it.

Solution — A lightweight chat widget the nurse opens with a single link — no install, no account. On the engineer side, every new chat fires a Slack notification with context. I respond from Slack; the nurse sees my reply land in the chat bubble. Conversations persist as a searchable record.

Next.jsSlack BoltSupabaseServer-Sent Events
n° 02

Relay Reimbursement Portal

Reimbursement was a spreadsheet you filled out, attached to an email, and sent to your boss. Approvals lived in reply chains, status was opaque, and reconciling at quarter-close meant scraping inboxes.

Solution — A portal that generates the request form on click and emails it directly to the approver. Approvers approve or reject inside the portal — which auto-fires the reply email back to the requester, no manual step. Full audit trail kept.

Next.jsSupabaseResendTailwind
n° 03

RoboCare Website

When a robot stalls in a hospital corridor at 2 AM, customers want to know they're not shouting into a void. Trust in the support team was implicit — but never made visible.

Solution — A public-facing site that formally introduces the RoboCare team — who we are, what we own, how we resolve incidents. Less product page, more brand story for the people behind the work.

Next.jsMDXTailwindVercel
n° 04

Relay Store

Relay's internal employee store was scattered — no clean place to browse, no clean checkout flow with the company's internal currency. Admin overhead per transaction was high.

Solution — An e-commerce-style internal store: employees browse, add to cart, and check out using the company's internal credits. Inventory and balances tracked. Admin tooling for adding items and managing stock.

Next.jsSupabaseTailwindInternal SSO
§ 05live demo

Talk to RoboChat.
Two sides of the same chat.

When a hospital nurse hits a wall with a robot, they open the chat link. I see it land in Slack and reply from there. They see my response appear in the bubble. No phone call, no install, no account.

built with Slack Bolt · Supabase · SSE · Next.js

RC
RoboCare
an operator is here · usually replies in minutes
↓ pick a sample message below to start a chat
robocare-customer-chat
channel is quiet · waiting for incoming chats
message #robocare-customer-chat
Try a customer message →
§ 06credentials

Education &
certifications.
For the record.

  • Bachelor of Science in Computer Engineering
    University of the East — Manila · 2018 — 2023
    degree
  • Huawei Certified ICT Associate
    Internet of Things
    certified
  • ITIL
    IT Service Management
    certified
  • Microsoft 365 Fundamentals
    YESI Education
    certified
  • Network Security
    certified
  • Journey to the Cloud and TDD
    workshop
  • Basic React.js
    workshop
  • Web Development with WordPress
    workshop
  • Arduino Virtual Workshop
    workshop
  • Best Design Project — IoT Smart Garden
    award
§ 07fin

Let's talk.
If the role's interesting,
I'm interested.

Open to robotics ops, AI / automation engineering, internal tooling, or anywhere the three meet. New Manila, Quezon City, Philippines, remote friendly across timezones.